High Availability Architecture with AWS CLIv2

Prerequisite:

  • Created an AWS account.
  • Install AWS cliv2 in OS.
  • Configure AWS cliv2 with IAM user.

Problem Statement:

  • Webserver configured on EC2 Instance
  • Document Root(/var/www/html) made persistent by mounting on EBS Block Device.
  • Static objects used in code such as pictures stored in S3
  • Setting up the Content Delivery Network using CloudFront and using the origin domain as an S3 bucket.
  • Finally, place the Cloud Front URL on the web app code for security and low latency.

Step-1) Install AWS CLI and configure it.

  • Here I am installing awscliv2 on Redhat Linux.
  • Follow the given link to install it.
  • After installing it confirms it.
aws --version
AWS CLI installed
  • Now we need to configure AWS CLI.
aws configure
  • Now you need to type your access and secret key of IAM user.
  • After type region name.

Step-2)Create a key pair

  • Type the following command:
aws ec2 create-key-pair --key-name KEY_NAME > OUTPUT.pem
  • Here I am using (>) for saving our key, it need if anyone wants to login in this instance.

Output:

Key

Step-3)Create a security group

  • Type the following command:
aws ec2 create-security-group --group-name GROUP_NAME --description "DESCRIPTION" > OUTPUT.TXT
  • Here I am again saving my output while creating a security group because at the time of launching ec2-instance we need the id of this security group.

Output:

Security Group
aws2 SG’s

Step-4)Launch an instance using the above created key pair and security group.

  • Type the following command:
aws ec2 run-instances --image-id ami-0e306788ff2473ccb --instance-type t2.micro --count 1 --subnet-id subnet-1105675d --security-group-ids sg-040c982abe9bb3d48 --key-name key2 > ec2inf.txt
  • Now use ami-id which you want, and use security groups id which we have already saved the output.

Output

ec2 — Launched

Step-5)Create an EBS volume of 1 GB.

  • Type the following command:
aws ec2 create-volume  --volume-type TYPE--size 1 --availability-zone ZONE_YOU_WANT > OUPTUT.TXT
  • Here I am again saving my output while creating a volume because at the time of attaching volume into ec2-instance we need the id of volume.

Output

Step-6)Attach the above created EBS volume to the instance you created in the previous steps.

  • Type the following command:
aws ec2 attach-volume  --instance-id YOUR_INSTANCE_ID --volume-id VOL_ID --device /dev/sdf
  • Now use id which we already saved in the output file at the time of creating volume

Output

EBS attached

Step-7)Create partition , format it and mount on /var/www/html

  • Now log in to your EC2-instance.
  • Type the following commands:
fdisk -l
EBS attached
  • Here we can see our EBS has been attached.
fdisk /dev/xvdf
  • Creating partition.
making partition + formatting
mkfs.ext4 /dev/xvdf
  • Here I am formatting the partition type ext4.
mount /dev/xvdf /varw/www/html
  • After formatting, we need to mount on /var/www/html for making our web code persistent

Output:

mounted on /var/www/html

Step-7)Create an S3 bucket for static content

  • Type the following command for creating an S3 bucket.
aws s3 mb s3://bucketname

Output:

S3 bucket created

Step-8) Upload content in the S3 bucket

  • Type the following command for creating an S3 bucket.
aws s3 cp . s3://BUCKET_NAME --recursive --acl public-read 

Step-9) Setting up Content Delivery Network using CloudFront and using the origin domain as an S3 bucket.

  • Type the following command for creating an S3 bucket.
aws cloudfront create-distribution --origin-domain-name BUCKET_NAME.s3.amazonaws.com
  • Here you need to type your bucket name in the — origin-domain-name .

Output

Cloudfront
Domain Name Cloudfront

Step-10) Place the Cloud Front URL on the web app code for security and low latency.

  • Now we need to use the domain name provided by CloudFront.
Web Code
  • Now Type Domain name in the img tag.

Final Output of Website

  • As you can see the data is coming from S3 using Cloudfront.

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